| 摘要 |
A fluid dispensing nozzle having a fluid inlet and a fluid outlet through which fluid is dispensed, a fluid passageway within the nozzle along which fluid flows between the inlet and outlet, a main valve located within the passageway for controlling flow of fluid between said inlet and outlet, the main valve being movable between a valve open position and a valve closed position, a valve actuating piston mechanically coupled with the main valve, the valve actuating piston communicating with fluid in said passageway to cause the main valve to move to its open or closed position and manually operable valve control means for controlling flow of fluid to said actuating piston for controlling opening and closing of said main valve.
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